Keyboard



FIG. 1 is a perspective view of a keyboard showing our new design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a left side view thereof.

The broken line showing of various features of the keyboard in FIGS. 1-2 and FIGS. 4-7 is for environmental purposes only and forms no part of the claimed design. 

CLAIM The ornamental design for keyboard, as shown and described. 